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时滞对结构振动半主动控制效果的影响
引用本文:孙清,张智谦,周进雄,张陵,田绍峰.时滞对结构振动半主动控制效果的影响[J].应用力学学报,2002,19(3):77-80.
作者姓名:孙清  张智谦  周进雄  张陵  田绍峰
作者单位:1. 西安交通大学,西安,710049
2. 洛阳有色金属设计研究院,洛阳,471039
基金项目:教育部高等学校骨干教师计划资助项目,陕西省自然科学基金项目 (2 0 0 1SL10 )
摘    要:应用磁流变阻尼器对结构振动进行控制,采用最优控制原理设计了控制器,给出在地震激励下结构半主动控制的仿真计算。研究了时滞对结构振动半主动控制效果的影响。数值结果表明:本文设计的半主动控制策略可有效地减小结构的振动响应,时滞对磁流变半主动控制效果随着时滞的增大而变差,但时滞不会导致该反馈控制系统的失稳。

关 键 词:时滞  结构振动  半主动控制  磁流变阻尼器  地震激励  控制算法
文章编号:1000-4939(2002)03-0077-04
修稿时间:2001年12月3日

Effects of Time Delay on Semi-active Control of Structural Vibration
Sun Qing,Zhang Zhiqian,Zhou Jinxiong,Zhang Ling,Tian Shaofeng.Effects of Time Delay on Semi-active Control of Structural Vibration[J].Chinese Journal of Applied Mechanics,2002,19(3):77-80.
Authors:Sun Qing  Zhang Zhiqian  Zhou Jinxiong  Zhang Ling  Tian Shaofeng
Institution:Sun Qing 1 Zhang Zhiqian 1 Zhou Jinxiong 1 Zhang Ling 1 Tian Shaofeng 2
Abstract:Sem active control Magnetorheological Damper (MRD) is applied to restrain structural vibration excited by seismic load in this paper. In which the controller is designed by using optimal control theory. Numerical simulation was carried out for a 3 degree of freedom structure under seismic load, and the effect of time delay on the semi active control was analytical through the numerical simulation. Simulation results demonstrate that the control strategy presented can effectively restrain structural vibration. It is found, that bigger value of time delay will result a lower control effectiveness, but the time delay cannot cause the instability of semi active control system when the proposed method is used.
Keywords:magnetorheological damper  structural vibration  semi  active control    time delay  
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